Weinger was born in New York, New York, to Jewish parents Babs Weinger, a teacher, and Elliott Weinger, an orthopedic surgeon.[1] The eldest of four children, Scott has two brothers and one sister. He spent the majority of his formative years in Hollywood, Florida. He moved to Los Angeles when his career began to take off.

Scott first became interested in acting in the third grade, when an actor gave a presentation for Career Day. He relentlessly pestered his parents to get him an agent until they finally realized that the young tyke was serious about becoming an actor.

In autumn of 1994, Weinger left Los Angeles to attend Harvard University, although he continued to work as the voice of Aladdin and made a final appearance on Full House. During his years at Harvard, Weinger served as an on-camera youth correspondent for Good Morning America, a job that required much international travel, as well as frequent live appearances on the show to discuss his pieces with Charles Gibson.

During the 2000s, Weinger has emerged as a prolific television writer and producer, having written and produced for situation comedies as well as hour-long dramas. He produced an award winning film short, 2002's The Cricket Player. He received his first writing credit on the WB television show Like Family. Other early writing credits included What I Like About You and Privileged. From 2009 to 2013, he was a writer-producer for 90210. After the series ended, he returned to comedy, becoming a writer-producer for The Neighbors.